Valve



June 9, 1925. 1,541,757

C. B. ALLEN VALVE Filed Mai-ch 5, 1924- I structed and arranged as toPatented "Juney 9, 1925.

NUNITED .STATES PATENT OFFICE.

i cuantas-B. liinnniv, or wanswoa'rmoaio, Assienoa ro 'rmi omo rumoreaecirc-A IANY, F WADSWOBTH, 0310, A COBPQBATION'OF OHIO.

. v aLvn.

Appunti nea #den s,

To all whom it may'cancem: V

Be it known that I, C11-Anims B. ALLEN, a

citizen of the United States, residing at Wadsworth,in-the county ofrMedina and 'State 0f Ohioiheveinventeda certain new andusefullmprovement' in Valves,.of which the following is a full, clear,Iand exact de# T e ob'ect of this invention is to provide a valve vorinstallation inany variety of pressure aline, .and having a disk so`conseat always and under all conditions under the pressureof Ling a bodyprovided -connection with the the Huid in the line, irrespective of themanual or other actuation of the valve spindle; whereby application ofan excessive pressure upon the disk and seat by mani u- 'lation of thevalve spindle injurious eit er l to the disk or seat is madeimpossible'.

The invention consists in 'a valve compriswith a seat, a disk arrangedfor cooperation with said seat, and a valve spindle havin a loose orlost motion isk, whereby the disk may be moved toward and withdrawn fromseating position, .but 'incapable of applying direct` or positiveseating pressure to the disk, as l -will proceed vnow to explain andfinally claim. y

' In the accompanying rdrawing illustrating the. invention, in t Aeseveral figures of which like parts are similarly designated Figure 1'isa longitudinal central vertica section of a valve embodying myinvention, parts thereof being shown in partial elevation. Fig. 2 is asection of the stem of the disk holder and the housing end of the' valvespindle cooperatingFtherewith, taken in ther plane of line 2.-2, ig. vl,Fig. 3 is a fragmentaryside elevation of the housing end of thespindle.`

The valve comprises a body 1, having a hub 2 which is connected with thebody. by a suitable threaded connection 3, and into this hub is threadedat j1 a suitable land liub or bonnet 5 provided with a screwt read 6with which engages the screwthread 7 of the valve spindle 8. Thisspindle '8 extends through a suitable gland, which may comprise apacking 9, gland 10 and land-nut 11, and carries at its upper en anyapproved form oi operating device, such as a Wheel 12.

The body 1. is provided with a seat 13, of any approved form, with whichcooperates or Amay be applied onl 1924. Serial No. 697,021.

a disk 14 of any desired material, such as l any of the well known valvedisk composij y tions, or liber, this disk being carried in a respect tothe spindle 8. `Above the housing 21 the spindle-is formed with alongitudinal bore 22 in .which I preferto mounten' compression spring23'acting 'against thev head 20 of the stem of tliedisk holder 15, but,if desired this springy maybe omitted without interfering with theefficient operation of the valve, as will hereinafter a pear.

through the ,seat opening 18 and serving asment of the' disk 14' and itsAholder 15 'with v `The axial movement of the 'spindle is i limited by ashoulder 24in thegland hub pir bognnet l5 anda shoulder or *stop 25 inthe The valve is assembled as Vfollows:.--.First, the hub 2 is slip edover the stem 19, o,fitlie disk holder. t en the -spring 23 isv insertedin the bore 22, and the head 200i the stein 19, insertedin thehousingopening 26 therein (see Fi 2 and 3 'the spring 23 being compresse withinthe vre 22 at this time and being allowed vto expand after the insertionof the head to form the 21 throu hf an connection between fthe diskholder and the spindle, the bottoni 27 of the heusingbeing cut away asat 28 in line with the opening '26 to admit the stem 19. Then thespindle by means of its-thread 7 'is screwed into the thread 6 fof the.gland hub or bonnet 5, and the packing 9, gland 10 and gland nut v11 aplied. The com lation of the assembl o the valve is ma e by -tlireadinvthe hu 2 into body 1., it ,being understoo that the l nut 16. The

vwheel 12 may be 'applied at any time after disk 14 has been previouslyassembled in the holder 15 by means of the spindle is passe the glandhub, en it is desired a spindle nut 29 the wheeljniposition eustomarymanner.

throurh i toaopen or close the va ve, being used for holdin uponfthespindle, in t The operation of the valve ia as follosvaz-` The valveshould boinserted in tlieline in auch position that the llowwill thedirection of the arrow, Fig; 1, whereby the pressure of the tluidpassing through the valve will tend to force the disk to its seat whenthe disk is moved to seating position. Assuming that the valve isclosed, as shown in Fig. 1, and it is desired to open it, the wheel 12is turned in contra-clockwise or left-hand direction, thereby,throughtheocoperation of the screwthreads 6 and 7, rais# ing the spindle andwith it the housing 21. During this raising of the spindle and hous ing,the spring 23 will expand and the disk 14 being under line pressure willremain upon its seat until such time as the bottom 27 of the housing 21engages with the under face of the head 20, whereupon continued turningof the spindle will cause the disk to be raised'from its seat, and thisraising may after serving to be continued until the top of the housingengages with the shoulder 24 at which time the valve will be completelyopened, the fingers 17 meanwhile maintaining the disk 14 and its holdei15 in proper alignment with the seat opening 18v in the usual manner.

' To close the 'valv@, the indle is turned in clockwise or right-handirection, Whereby the above described movements of the parts will bereversed, as follows The spindle and its housing will be lowered, andwill lower the disk holder 15 and disk 14 to seating-positionunder theiniuence of the s ring 23, the pressure of the fluid entering tie valvein the direction of thearrw theren hold the disk 14 upon its seat 13 andprevent low through the valve. Continued turning of the spindle willbring the lower face of ing 21 into engagement with the shoulder` 25,thereby limiting the descent of the spin-i. dle and preventing itsfurther rotation. It will be seenthat, although the valve is 'completelyclosed, it is impossible to exert any direct pressure upon the disk 14by means of the spindle 8, the closing action being obtained solely bymeansof the spring 23 and the influence of the ress ure of the fluidentering the valve. lthough this is the case the disk is, nevertheless,positively withdrawn from and advanced toward its seat by the action ofthe spindle, as above described.

I have hereinbefore stated that the sprin 23 may be dispensed with ifdesired, and

' -pressure of the fluid entering the valve alone relied upon to causethe disk to seat when moved to seating position. and to maintain thedisk upon its seat. In this case the valve' will be opened by the abovedescribed cooperation of the bottom 27 of the housing 21 with thehead20, and in closing the valve, the disk 14 will be moved into suchproximit to its seat 13 as to permit the pressure of the fluid passingthrough the valve to` exert a closing action upon the disk, by cotactsywith the upper end the bottom 27 of the' hous- Iaccordance with myMoreover', the valve as hereinbefore pointed out, being so constructedas to oper` ate eiciently whether the spring 23 is used or not, it willbe apparent that it' for any reason the spring should become broken orshould lose its temper and consequently cease to perform its function,the valve will continue to operate efficiently, notwithstandm I am awarethat valves of the self-seating type have heretofore been provided, butin all of those with which I am familiar, a spring is used for movingthe valve disk toward its seat, the seat being provided upon the underface of the partition web of the valve body, and the spring beinginserted through an opening in the bottom of the body, which opening isclosed by a suitable plug which forms an abutment for one end of thespring, the' other en'd thereof bearing against the under face of thedisk holder. In this type of valve, the spindle passes through the seatopening and conof the disk holder,

Various advantageous modifications in a valve constructed according tomy invention will be a parent as compared with valves of this astdescribed type, among which are the following The valve opening or areais. increased for the reason that the spindle does not extend throughthe opening. The spring of my valve exerts maximum pressure when thevalve is fully closed, whereas the Vsprings of valves of the other typeexert minimum pressure upon complete closure ofthe valve. Valvesconstructed in accordance with my invention 'may be made in globe,angle, cross or Y type, whereas valves constructed according to theother design are effective onlyl when made in globe type.

invention will operate eiciently if the sprin is broken, loses itsItemper or is omitted a together, whereas in the other ty e the springis essential for moving the isk to wlthin seating position, and if thespring becomes broken, the disk Valves constructed in" will not seat,even by gravity should the valve be installed in inverted position, ifit becomes stuck due to corrosion, scale or other iniuence, whereas inmy valve the disk is positively moved toward its seat even when thespring is broken or omitted by cooperation between the parts 21 and 20.

my construction, the spring, being flow of other type with housed andout of the direct ath of the low of the ilu-id passing throng the valve,is not subject to the direct action of such fluid, whereas in the caseof valves of the which I am familiar, the is arranged directly in thepath of such iluid, and if this fluid be steam, hot water or other fluidhaving properties injurious to the temper of the spring, the spring isapt to lose its eitcienc'l .y

Moreover, in valves of my design only spring the threeusual openings inthe body are necessary, whereas in the other t pe of valves, a 'fourthopening is provi ed .for the insertion of the spring, and the valve bodythereby relatively weakened.

It will thus be seen that Iprovide avalve well adapted to the purposefor which it is designed, and embodying marked features of advantageover other valves of this general ty with which I am familiar, andalthoug 1 I have hereinabove described and have shownin the drawing aparticular embodiment of my invention and a particular formation andarrangement of the parts comprising same, it is to be understood that I-do` not vconsider the invention as limitedto this particulardisclosure, but

j contemplate various changes in the construction and arrangement of theparts as within the spirit of the linvention and the scope of thefollowing claims.

1.I In a valve, a bonnet, a body provided with a seat, a disk arrangedfor cooperation with said' seat and adapted to be seated thereon by theinfluence of fluid pressure in said valve and having a headed stem, aspindle vhaving screwthreaded engagement with said bonnet and having anintegral housing enclosing the head of said stem and providing a lostmotion connection therewith, a hub interposed between and connectingsaid'body and bonnet, and a stop formedA in said hub for-limiting thevalve closing movement of said spindle, said spindle capable ofimparting positive unseating movement to said disk but capable only oflimparting seating movement thereon to an extent sucient to permit it toseat under the influence of said pressure.

2. In a va1ve,a bonnet, a body provided with a' seat, a disk arrangedfor cooperation with said seat and adapted to be seated thereon by theinfluence of fluid pressure in said valveand having a headed stem, a

spindle having screwthreaded engagement with said bonnet and having anintegral housing enclosing the headof said stem and providing a lostmotion connection therewith, a hub interposed between and connectingsaid body and bonnet, a stop formed in said hub for limiting the valveclosing movement of said spindle, said spindle capable of impartingpositive unseating move-A ment to said disk but capable only ofimparting seating movement thereto to an extent suflicient to permit itto seat under the influence' of said pressure, and a resilient memberlnterposed between the spindle and the head of the stem for assistingluid pressure in seating the disk.

In testimony;-l Whereof I have hereunto set my hand t 's 3rd day ofMarch, A." D. 1924.

Witnesses:

J. A. CRUMWINE, DoN YOUNG.

CHARLES B. ALLEN. l

